146 lines
4.1 KiB
Groff
146 lines
4.1 KiB
Groff
.\" $NetBSD: ac.8,v 1.9 2000/07/05 15:45:31 msaitoh Exp $
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.\"
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.\" Copyright (c) 1980, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\" Copyright (c) 1994 Simon J. Gerraty
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.\" Copyright (c) 1994 Christopher G. Demetriou
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgements:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" This product includes software developed by Christopher G. Demetriou.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)ac.8 8.2 (Berkeley) 4/19/94
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.\"
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.Dd April 19, 1994
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.Dt AC 8
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.Os
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.Sh NAME
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.Nm ac
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.Nd display connect time accounting
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.Sh SYNOPSIS
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.Nm
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.Op Fl d
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.Op Fl p
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.Op Fl t Ar tty
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.Op Fl w Ar file
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.Op Ar users ...
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.Sh DESCRIPTION
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If the file
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.Pa /var/log/wtmp
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exists,
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a record of individual
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login and logout times are written to it by
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.Xr login 8
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and
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.Xr init 8 ,
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respectively.
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The program
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.Nm
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examines these
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records and writes the accumulated connect time for all logins to the
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standard output.
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.Pp
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Options available:
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.Bl -tag -width indentXXX
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.It Fl d
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Display the connect times in 24 hour chunks.
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.It Fl p
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Display individual user totals.
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.It Fl t Ar tty
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Only do accounting logins on certain ttys. The
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.Ar tty
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specification can start with '!' to indicate not this
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.Ar tty
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and end with '*' to indicate all similarly named ttys.
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Multiple
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.Fl t
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flags may be specified.
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.It Fl w Ar file
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Read raw connect time data from
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.Ar file
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instead of the default file
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.Pa /var/log/wtmp .
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.It Ar users ...
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Display totals for the given individuals
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only.
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.El
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.Pp
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If no arguments are given,
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.Nm
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displays the total amount of login time for all active accounts on the
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system.
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.Pp
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The default
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.Pa wtmp
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file is an infinitely increasing file
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unless frequently truncated. This is normally
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done by the daily daemon scripts scheduled by
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.Xr cron 8 ,
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which rename and rotate the
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.Pa wtmp
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files before truncating them (and keep about a week's worth on hand).
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No login times are collected, however, if the file does not exist.
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.Pp
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For example,
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.Bd -literal -offset
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ac -p -t "ttyd*" > modems
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ac -p -t "!ttyd*" > other
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.Ed
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.Pp
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allows times recorded in
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.Pa modems
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to be charged out at a different rate than
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.Pa other .
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.Pp
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The
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.Nm
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utility exits 0 on success, and >0 if a fatal error occurs.
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.Sh FILES
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.Bl -tag -width /var/log/wtmp.[0-7] -compact
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.It Pa /var/log/wtmp
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connect time accounting file
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.It Pa /var/log/wtmp.[0-7]
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rotated files
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.El
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.Sh SEE ALSO
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.Xr init 8 ,
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.Xr sa 8 ,
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.Xr login 1 ,
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.Xr utmp 5
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.Sh HISTORY
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An
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.Nm
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command appeard in
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.At v6 .
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This version of
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.Nm
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was written for
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.Nx 1.0
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from the specification provided by various systems' manual pages.
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